Honestly I suggest you pick a different language to learn, like Tibetan. There are something like 52 letters - one for every petal on the seven main chakras. It is just about impossible to learn to say the Ts, Ds, and Ns without the guidance of someone who grew up learning Sanskrit. And the aspirated Hs. Or maybe Hebrew and Yiddish, so you are more likely to find people to talk with and you can still get metaphysical with Kabbalah.

Duolingo (free) has Hindi. It will get you in the right direction for Sanskrit.